Sphecoidea of Nebraska 99 
columnaris, Petalostemum violaceus, Melilotus alba, Solidago sp. 
and Cleome serrulata. 
Tachytes distinctus F. Smith. 
1856. Tachytes distinctus F. Smith, Cat. Hym. Brit. Mus., IV, p. 307. 
1892. Tachytes distinctus Fox, Trans. Amer. Ent. Soc., XIX, p. 246. 
1913. Tachytes distinctus Williams, Kans. Univ. Sc. Bull., VIII, p. 
157. 
Males 31, females 27: Omaha (31), Louisville (3), South 
Bend (1), Meadow (3), Lincoln (13), Red Cloud (1), Curtis 
(2) and Haigler (1); July 10 to September 12; visits flowers of 
Melilotus alba, Chamaecrista fasciculata, Euphorbia sp., Helian- 
thus sp. and Dicrophyllum marginatum. 
Tachytes rufofasciatus Cresson. 
1872. Tachytes rufo-fasciata Cresson, Trans. Amer. Ent. Soc., IV, p. 
217. 
1892. Tachytes rufofasciatus Fox, Trans. Amer. Ent. Soc., XIX, p. 
247. 
1913. Tachytes rufofasciatus Williams, Kans. Univ. Sc. Bull., VIII, 
p. 155. 
Males 1, females 2: Omaha (2) and Haigler’(1); July 7 to 
August 12; visits flowers of Chamaecrista fasciculata. 
Tachytes austerus Mickel. 
1916. Tachytes austerus Mickel, Trans. Amer. Ent. Soc., XLII, p. 
417. 
Females 1: Omaha, August 5, 1914 (L. T. Williams). 
Tachytes obscurus Cresson. 
1872. Tachytes obscurus Cresson, Trans. Amer. Ent. Soc., IV, p. 217. 
1893. Tachytes obscurus Fox, Proc. Acad. Nat. Sc. Phil., p. 504. 
1913. Tachytes obscurus Williams, Kans. Univ. Sc. Bull., VIII, p. 154. 
Males 7, females 2: Omaha (4), Louisville (1), Lincoln (1), 
Fairmont (1), Mitchell (1) and Bad Lands (1) ; July 11 to Sep- 
tember 8; visits flowers of Chamaecrista fasciculata. 
Tachytes intermedius (Viereck). 
1906. Tachysphex intermedius Viereck, Trans. Amer. Ent. Soc., 
XXXII, p. 211. 
1913. Tachytes intermedius Williams, Kans. Univ. Sc. Bull., VII, p. 
154. 
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